Cushion tire



Patented Aug. 24, 1926.

HENRY M. LAMBERT, F PORTLAND, OREGON.

CUSHION TIRE.

Application led May 13, 1924. Serial No. 713,051.

The inventionvrelates to vehicle tires of the ventilated cushion type manufactured especially for use on automobiles or the like,

and has for its 'gener al object to provide an improved structure of that type of tire such as will eifect an economic advance in the art and have the quality of being especially easy riding.

In its more detaile d nature the invention seeks to provide a structure of the type of tire stated which will be more simple and economie to manufacture than tires of a kindred nature in that it may be more easily stripped, f one thatl will have the quality of being especially easy riding due to the well balanced arran gement of Ventilating pockets and the peculiar shape thereof, providing a particularly uniform amount of rubber to sustain the load and take upthe shock of the road and for the presence "of a slight bit of additional stock along the outer sides of the tire than at the circuinferential center.

lith the above and other objects in view the invention further resides in those novel details of construction, manner of arrangement and advantages, all of which lwill be first fully i described,

then be particularly pointed out in the appended claims, reference being had to th ings, in which e accompanying draw- Figure l is a side view of a vportion of the tire, a part thereof being shown in central longitudinal section.

FigureQ is a horizontal section of the tire taken through the Ventilating pockets thereof substantially on the line 2-2 of Figure l, portions of two forms of pocket forming mandrels or cores being shown in place.

Figure 3 is a cross section of the tire taken Y across one of the Ventilating pocketstalren substantially on the line 3--3 of Figure 2.

Figure 4 is a fragmentary horizontal section similar to Figure 2 illustrating a slightly modified positioning of the ventilating pockets.

Figure 5 is a fragmentary side elevation illustrating a modification of the invention. Figure 6 is a sect-ion on the line 6-6 of Figure 7.

Figure 7 is a sect1 Figure 5.

on on the line 7-7 of Figure 8 is a fragmentary side elevation illustrating another modification.

Figure 9 is a section on the line 9 9 of Figure l0.

Figure l0 is a section on'the of Figure 8. Y

Figure l1 is a fragmentary side elevation of a still furtherA modification.

Figure l2 is a section on thev line 12-12 of Figure 13.

Figure 13 is a section on the line 13-13 of Figure l1.

In the drawings in which like numerals of reference indicate like parts in all of the iin@ ionic n figures, l designates thetire riin and 2 the body structure thereof, the latter being vulcanized or otherwise suitably secured upon the former as ig struction. f

The tire body conventional in tire constructure 2 may `be ofany conventional cross sectional contour, aseX- emplified in Figure 3 of the drawings, and

may include any conventional treaddesign,

indicated at 3.

3The feature of the invention resides in the shape and arrangement of the ventilat.

ing pockets 4. The pockets 4 are spaced equi-distantly around the lateral tire-'sides and project therefrom into the tire .body on an airis paralleling the axis of the yrim and torpoints beyond the medial plane of the said body. lThose of the'pockets at one side of the tire body are disposed alternatelyof those at the opposite side and with theirl axes disposed centrally between the positions of the axes side.

forms being illust-r dr course, parallel.

Av.of those ofthe opposite The pockets 4 may be formed by inandrels or forming cores 5 formed integral with or attached to the mold side plates 6, both awings.

ated in Figure 2 'of the The pockets 4 are all formed of a constant dimension in vertical cross section the top and bottom surfaces thereof being, of

See Figure 3. VThe horizontal cross sectional shape of the pockets are wedge shaped having the surfaces 8 thereof converging'toward-the inward limit ofthe same which is a vertical wall 9 positioned beyond the medial plane-of the tire body. rlhe surfaces 8 do not converge a pointy but are joined at their scribed by referring to the shape of the:

cores or mandrels 5 by which they may be formed. the nature of oval spoke shapes, of a length for extending across'thetirebody the desired distance', andlhaving'theside portions theieof'flattened as'at11`, toprovidethe flat sides 8 of the pockets 4, and having the meeting portions of the said flat and rounded surfaces, which would otherwise bezsubstantially angular, round'edlon an easy curve to provide the curves 12."VV

The flat sides 11 o'fthe cores-5` are so formed as to provide the flat side 8' ofthe pockets beginning atl the. entrancel of,v the same into tire body sides and mergingwith thecurvel forming the limiting wall 9. The pockets 4f are so cooperatively' ar.-

ranged that the adjacent flat' sides S'thereof areparallehand, whenv extended the degree'y shown in'Figure 2 ofthe drawing, provide azig-zagwall of rubber entirelyV uniform in thickness at the central developed plane of' the said pockets.

Thev pockets, are shown ing retained however. -t

ItLwill be readily'apparent fromFigure 1 of the drawings that the peculiarshaping andl positioning" of the Ventilating pockets providessa very uniform amountof` rubber presented Yfor sustaining load and absorbing road shockl and, by'reasonof the gradual decrease of' flat' area from" the innermost point of each side 8outwar'dito the respective lateral tire sidewall and the corresponding increase ofcurve thereby provided, a

slight degree'niore of rubber will be pro-` vided'` alongthelateral portions vof the tire body than is present intermediate thereof: These: features greatly add tothe easy riding of thetireandth'e? relative durability thereof.

VIt will be. obvious also,- by reference-to Figures 5, 6 andV 7, Figures 8, 9 and 10,V

andFigures11,12 and 13, that the ventilating pockets may; be formed'so as tobek either round,.square or diamond, or' polygonal, in shape at the entrance thereof respectively,

without' departing. from the scope of the` inventionas particularly pointed out in the appended claims. Those parts in Figure 4 corresponding to similar parts in the preceding figures bear the saine reference characters plus the index letter (la) those parts inA Figures 5, 6fand: 7 which correspond These mandrels orV cores` 5 are in;`

as extended not so far acrossthe kmedial linein' Figures: of the-drawings, the-parallel; side relation beto similar parts in the preceding .figures have the saine reference numerals plus the index letter (Zi), those parts in Figures 8, 9 and 10 corresponding tosiinilar parts in the preceding figures have the same reference characters plus the index letter (0); those parts in Figures 11, 12 and 13 corresponding to similar parts in the preceding figures` have the saine reference characters plus the index letter (d).

. Also,fbyf reason ofv providing the tapered sides ofthe pockets and providing for curves insteadof the sharp angles usually presented at the meeting points koffaces, the stripping of the tire from its mold will be' greatly l,facilitated and the tendency for mud and other foreign matter to lodge.l itself in thepoclretsl in a manner renderingV removal'thereofvery difi'icult will be greatly reduced. l y

By my arrangement it` will be seen that the tire is always riding on an equal pillar or layer of rubber and this tends to preventy Side-sway, very largely eliminating the saine.: lfv desired,y small"holes 4X, see Figure 3, may continue through the wall ofthe tire in theend of the wedge for-cross ventilating'purposes, though the use of these holes isa matter entirely optional and maybe, and preferably are, dispensedwith. V

There in the claims- I- refer to the central vertical longitudinal section7 of a pocketl have reference to aradial plane which includesvthe longitudinal axis of the pocket,I and .where in the claims I refer to thefcen tra1"horizontal section of apocket', I' have referenceA to a plane passing through thev longitudinal axisv of the pocket and lyingnormal to the aforesaid radial plane.

From the vforegoing description, taken inl connection with the accompanying drawings, y it'is thought that the novel details of'construction, the manner of arrangement and` Vthe advantages of the invention will be readily apparentv to those skilled in the art to which it relates. t

Havingthus described my invention, what Ifclaiin is 'v f L 1.v A cushion tire comprising an annular' bod-y having a. plurality* ofpockets extend-` ing inwardly from each lateral side thereof' part wayeacross the annular tireY bodypthe pocketsbeing f of constant y'dimension throughout their central vertical longitudinal section and wedge shaped throughout' their centralhorizontal section. t

rv2,'A cushion tire comprising an annular body havinga-plurality of pockets extending inwardly from keach lateral side-thereof part 'way across the annular tire body, the pockets being of constant dimension throughout their central vertical longitudinal section and having flattened sides prof 3Q' AJ cushion-tire comprisingva-n annular body having aplurality of pockets extending inwardly' from each lateral side thereof part-'way' across the annular tire body, on axespaiallelthel axis-of the annular body,

those at one side being positionedalternately ofthose atL the `opposite side, the pockets being of constant dimension throughout their central vertical longitudinal section and having flattened sides providing a wedge shape throughout their central horizontal section, the flattened sides of each pocket being parallel the nea-rest adjacent sides ofthe pockets extending `from the opposite tire side.

l. A cushion tire comprising an annular body having a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, on axes parallel the axis of the annular body, those at one side being positioned centrally alternately of those at the opposite side, the pockets being of constant dimension throughout their central vertical longitudinal section and having` flat-tened sides providing a wedge shape throughout their central horizontal section, the llattened sides of each pocket being parallel the nearest adjacent sides of the pockets extending from the opposite tire side providing a Zig-zag central cushion area of substantially constant dimension.

5. A cushion tire comprising an annular body havingI a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, the pockets being of constant dimension throughout their central vertical longitudinal section and wedge shaped throughout their central horizontal section, and having all meeting portions thereof curved.

6. A cushion tire comprising an annular body having a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, the pockets being of constant dimension throughout their central vertical longitudinal section and having flattened sides providing a wedge shape throughout their central horizontal section, thesurface Width of the flattened sides decreasing from the innermost points thereof outwardly.

7. A cushion tire comprising anvannular body having a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, the pockets being of constant dimension throughout their central vertical longitudinal section and having flattened sides providing a wedge shape throughout their central horizontal section, the surface width of the flattened sides decreasing frointhe iiinermost points thereof outwart ly, and fading at the juncture thereof with the lateral tire body sides.

8; Arcushion tire comprisingfan annular body having a plurality of poclretsexten'ding inwardly from-each lateral side thereofpart way across the annular tire body, on axes parallel the axisiof the annular body,

those at one side being positioned alternate-"1y sides of the pockets extending from the opposits tire side, the surface width of the flattened sides decreasing from the innermost points thereof outwardly.

9. A cushion tire comprising an annular body having` a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, on axes parallel the axis of the annular body, those at one side being positioned alternately of those at the opposite side, the pockets being of constant dimension throughout their central vertical longitudinal section and having flattened sides providing a wedge shape throughout their central horizontal section, the flattened sides of each pocket being parallel the nearest adjacent sides of the pockets extending from the opposite tire side, the surface width of the flattened sides decreasing from the innerinost points thereof outwardly, and fading at the juncture thereof with the lateral tire body sides.

10. A cushion tire comprising an annular bodv having` a plurality of pockets extending inwardly from each lateral side thereof part way across the annular tire body, on axes parallel the axis of the annular body,

those at one side being positioned alternately of those at the opposite side, the pockets `being of .constant dimension throughout their central vertical longitudinal section and having flattened sides providing a wedge shape throughout their central horizontal pocket being parallel the nearest adjacent sides of the pockets extending from the opposite tire side, the surface width of the Hattened sides decreasing from the innermost points thereof outwardly, and fading at he juncture thereof with the lateral tire body sides, the meeting portions of all inceting surfaces of the pockets being curved to provide for easy stripping. j

' ll. 'A cushion tire comprising an annular body having a plurality of openingsextending inwardly from each lateral side thereof `toward the other side across the annular tire v portions providing a wedge shape throughsection, the flattened sides of eachA body having a plurality of openings eXtendsubstantially as speoiecl.-

out their central horizontal section, the surfrom each lateral side thereof toward the face Width of each flattened side portion deopposite side, the pockets being oi constant creasing from the innermost extremity outdimension throughout their central Vertical 10 Warclly. longitudinal section and Wedge shape 12. A cushion tire Comprising an annular throughout their central horizontal section,

ing` inwardly across the annular tire body HENRY M. LAMBERT. 

